为了提高基于雪崩三极管级联的超宽带电磁脉冲源的输出功率,将其作为脉冲子源,提出对两路相同的脉冲子源进行功率合成,并分析了该脉冲子源的频率参数。根据输出脉冲宽频带、陡前沿的特点,利用ADS仿真软件对3节、4节和7节功率合成模块进...为了提高基于雪崩三极管级联的超宽带电磁脉冲源的输出功率,将其作为脉冲子源,提出对两路相同的脉冲子源进行功率合成,并分析了该脉冲子源的频率参数。根据输出脉冲宽频带、陡前沿的特点,利用ADS仿真软件对3节、4节和7节功率合成模块进行了仿真和优化设计,最终确定并研制了最优的3节功率合成模块。通过实际测试得出:在脉冲子源的工作频带内,其输入和输出端口回波损耗的最大值为–26 d B,传输损耗基本保持在–3.2 d B,输入端口间隔离度的最大值为–28 d B,该功率合成模块的仿真结果与实验验证基本一致。通过对比脉冲源原波形和合成后的输出波形可见,该功率合成模块可满足频带为200 MHz^1.2 GHz脉冲源的功率合成。展开更多
RECENTLY, we have successfully developed new nanocrystalline Fe<sub>72</sub>Cu<sub>1</sub> Nb<sub>2</sub>V<sub>2</sub>Si<sub><</sub>sub>14</sub>B...RECENTLY, we have successfully developed new nanocrystalline Fe<sub>72</sub>Cu<sub>1</sub> Nb<sub>2</sub>V<sub>2</sub>Si<sub><</sub>sub>14</sub>B<sub>9</sub> and Fe<sub>72</sub>-Cu<sub>1</sub>Nb<sub>1</sub>Mo<sub>1</sub>V<sub>2</sub>Si<sub>14</sub>B<sub>9</sub> alloys. Their cost has been reduced and their amorphous ribbons havemuch better ductillty as compared with the early-developed and typical nanocrystalline Fe<sub>73.5</sub>-Cu<sub>1</sub>Nb<sub>3</sub>Si<sub>13.5</sub>B<sub>9</sub> and Fe<sub>73.1</sub> Cu<sub>1.2</sub>Nb<sub>3.2</sub>Si<sub>12.5</sub>B<sub>10</sub> alloys. The new alloys still show superiorsynthetical magnetic properties and have practically been applied to several important fields. Inthis note, we report magnetic properties for the new alloys, analysis results of core losses andseveral application examples.展开更多
文摘为了提高基于雪崩三极管级联的超宽带电磁脉冲源的输出功率,将其作为脉冲子源,提出对两路相同的脉冲子源进行功率合成,并分析了该脉冲子源的频率参数。根据输出脉冲宽频带、陡前沿的特点,利用ADS仿真软件对3节、4节和7节功率合成模块进行了仿真和优化设计,最终确定并研制了最优的3节功率合成模块。通过实际测试得出:在脉冲子源的工作频带内,其输入和输出端口回波损耗的最大值为–26 d B,传输损耗基本保持在–3.2 d B,输入端口间隔离度的最大值为–28 d B,该功率合成模块的仿真结果与实验验证基本一致。通过对比脉冲源原波形和合成后的输出波形可见,该功率合成模块可满足频带为200 MHz^1.2 GHz脉冲源的功率合成。
文摘RECENTLY, we have successfully developed new nanocrystalline Fe<sub>72</sub>Cu<sub>1</sub> Nb<sub>2</sub>V<sub>2</sub>Si<sub><</sub>sub>14</sub>B<sub>9</sub> and Fe<sub>72</sub>-Cu<sub>1</sub>Nb<sub>1</sub>Mo<sub>1</sub>V<sub>2</sub>Si<sub>14</sub>B<sub>9</sub> alloys. Their cost has been reduced and their amorphous ribbons havemuch better ductillty as compared with the early-developed and typical nanocrystalline Fe<sub>73.5</sub>-Cu<sub>1</sub>Nb<sub>3</sub>Si<sub>13.5</sub>B<sub>9</sub> and Fe<sub>73.1</sub> Cu<sub>1.2</sub>Nb<sub>3.2</sub>Si<sub>12.5</sub>B<sub>10</sub> alloys. The new alloys still show superiorsynthetical magnetic properties and have practically been applied to several important fields. Inthis note, we report magnetic properties for the new alloys, analysis results of core losses andseveral application examples.
